How often should the condenser be focused when imaging on a microscope?

Focusing the condenser every time you change slides is important for obtaining optimal contrast and resolution in microscopy. When you switch slides, the thickness, type of specimen, or cover slip may vary, which can affect how light is transmitted through the sample. Adjusting the condenser ensures that the light is properly directed through the specimen, allowing for clearer images and improved detail.

While adjusting the lighting is crucial for visibility, focusing the condenser specifically relates to the properties of each individual slide. Daily adjustments and high power objective considerations are less about slide differences and more about overall setup stability, and they do not address the need for real-time adjustments based on sample characteristics. Therefore, focusing the condenser at each slide change is essential for accurate and effective microscopy work.